We were using wf responsive widget version 1.0.15 and upgraded to version 1.0.20 today.
We had to revert back to version 1.0.15 as the new version completely screwed pages with Vimeo videos. They were displayed at very tiny dimensions and not resized. This version changes lots of things that are not correctly implemented it seems
You can have a look at https://activ-ha.com/c/90:entreprises-industries/4257:sellerie-moillot
and try to implement the new files to check the issue